Autonomous Mobile-Agent-Based Data Allocation Technology in Distributed Database Systems for Assurance(Mobile Agent)(<Special Section>Next Generation Networks Software)
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概要
- 論文の詳細を見る
Recently with the advent of the IT and the wide spread use of the Internet, new user oriented production and logistic systems, such as the Supply Chain Management System, have been required in order to cope with the drastic and continuous changes on the markets and users' preferences. Therefore, heterogeneous database systems need to be integrated in a common environment which can cope with the heterogeneous requirements of each company under an ever-evolving changing environment. That is assurance. Autonomous Decentralized Database System (ADDS) is proposed as a system architecture in order to realize assurance in distributed database systems. In this system architecture, a looselyconsistency management technology is proposed in order to maintain the consistency of the system, each database can update autonomously, and confer the real time property. A background coordination technology, performed by an autonomous mobile agent, is devised to adapt the system to evolving situations. The system can achieve real time by allocating the information in advance among the sites that has different time constraints for updating. Moreover, an assurance information allocation technology is proposed when considering that a failure in the background coordination mechanism may lead to loss of data and unavailability of the system. This mechanism, in which the mobile agent autonomously regulate its own capacity for allocating the information, is proposed based on the real-time property and system's availability considerations. The effectiveness of the proposed architecture and technologies are evaluated by simulation.
- 社団法人電子情報通信学会の論文
- 2004-07-01
著者
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Mori Kinji
Department of Computer Science, Tokyo Institute of Technology
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Mori Kinji
Department Of Computer Science At Tokyo Institute Of Technology
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Perez Leguizamo
Department Of Computer Science At Tokyo Institute Of Technology
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WANG Dake
Department of Computer Science at Tokyo Institute of Technology
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